‘Yuguan’ (Chinese name, which means that its surface is as smooth as jade and its quality is excellent) is a new late-ripening apple cultivar of high quality derived from a cross of ‘Golden Delicious’ × ‘Fuji’. The fruit is cylindrical, and its surface is smooth, waxy, and golden yellow. The flesh is light yellow, with a fine, crisp, and juicy texture and a sour–sweet flavor, and the aroma is strong and pleasant. Average fruit weight is ≈ 330 g, soluble solid content is ≈ 15.3%, titratable acid content is ≈ 0.52%, and flesh firmness is ≈ 8.6 kg⋅cm–2. In the Changli area (lat. 39°22'N, long. 118°45'W), the fruit is best harvested in late October. ‘Yuguan’ exhibits resistance to Glomerella leaf blotch, based on both field resistance evaluation and molecular marker detection. This new cultivar is suitable for the fresh-fruit market because it has good eating quality off the tree as well as after cold storage for 6 months at 4 °C.
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